HTTP Header Reference
Search common HTTP request and response headers.
Formula and method
This reference tool searches a bundled static data table included with the site. Bundled lookup tools are fast, cache-friendly, and do not need a paid API.
Embed this tool
Paste this snippet into your own site or blog post to embed a live, working copy of this tool. It links back to the full page on SpecWhale.
Frequently asked questions
What is HTTP Header Reference?
HTTP Header Reference is a free, privacy-first online tool on SpecWhale designed to search common http request and response headers. quickly in your browser without requiring an account or sign-up.
Is HTTP Header Reference free to use?
Yes, all tools on SpecWhale are 100% free, have zero usage limits, and run entirely in your web browser.
Is HTTP Header Reference free to use?
Yes. HTTP Header Reference is completely free, has no usage limit, and does not require an account, email, or API key.
Does HTTP Header Reference store or upload my data?
No. HTTP Header Reference searches a small reference table bundled with the page. Nothing is sent to a server.
How accurate is HTTP Header Reference?
HTTP Header Reference follows the method described above. As with any free tool, double-check results before relying on them for anything high-stakes.
Can I embed HTTP Header Reference on my own website?
Yes. Use the "Embed this tool" snippet on this page to add a free, working copy of HTTP Header Reference to your own blog post or page.